OBJECTIVE To investigate the effects and mechanism of asperuloside （Asp） on the pyroptosis of intestinal epithelial cells in rats with ulcerative colitis （UC）. METHODS The male SD rats were randomly divided into Control group， model group （UC group）， ASP low-dose and high-dose groups [Asp-L， Asp-H groups， Asp 35， 70 mg/（kg·d）]， ASP high-dose group+AMPK inhibitor Compound C group [Asp-H+Compound C group， Asp 70 mg/（kg·d）+Compound C 0.2 mg/（kg·d）]， with 12 rats in each group. Except for Control group， the other groups were injected with 50% ethanol （0.25 mL）+5% 2，4， 6- trinitrobenzene sulfonic acid solution （2 mL/kg） into the intestinal cavity to construct UC model. After modeling， the rats in each drug group were given corresponding drug solution by gavage or （and） tail vein injection， once a day， for 14 consecutive days. After the last administration， the weight of rats in each group was measured， and the length of their colons was measured； disease activity index （DAI） score and colonic mucosal damage index （CMDI） score were performed， and the serum levels of inflammatory factors （interleukin-18， -1β， -6） were detected. The pathological changes of the colon tissue were observed. The expressions of pyroptosis-related proteins [caspase-1， gasdermin D （GSDMD）] in colon tissue， and pathway-related proteins such as adenosine monophosphate-activated protein kinase （AMPK）， thioredoxin-interacting protein （TXNIP）， NOD-like receptor protein 3 （NLRP3） and apoptosis-associated speck-like protein containing a CARD （ASC） were all detected. RESULTS Compared with Control group， the colon tissue structure of rats in UC group was damaged， with obvious infiltration of inflammatory cells and edema. Their body weight， colon length and phosphorylation level of AMPK protein were significantly reduced or shortened； DAI and CMDI scores， serum levels of inflammatory factors， and the protein expressions of caspase-1， GSDMD， TXNIP， NLRP3 and ASC in colon tissue were increased or upregulated significantly （P＜0.05）. Compared with UC group， the pathological damage of colon tissue in rats was relieved in Asp-L and Asp-H groups， and all quantitative indicators were significantly improved （P＜0.05）； the improvement effect of Asp-H group was more significant （P＜0.05）. Compound C could significantly reverse the improvement effect of high-dose of Asp on the above indicators in UC rats （P＜0.05）. CONCLUSIONS Asp can improve inflammatory damage in colon tissue and inhibit pyroptosis of intestinal epithelial cells in UC rats， which is associated with the activation of AMPK and inhibition of TXNIP/NLRP3 signaling pathway.

OBJECTIVE To investigate the effects and mechanism of asperuloside （Asp） on the pyroptosis of intestinal epithelial cells in rats with ulcerative colitis （UC）. METHODS The male SD rats were randomly divided into Control group， model group （UC group）， ASP low-dose and high-dose groups [Asp-L， Asp-H groups， Asp 35， 70 mg/（kg·d）]， ASP high-dose group+AMPK inhibitor Compound C group [Asp-H+Compound C group， Asp 70 mg/（kg·d）+Compound C 0.2 mg/（kg·d）]， with 12 rats in each group. Except for Control group， the other groups were injected with 50% ethanol （0.25 mL）+5% 2，4， 6- trinitrobenzene sulfonic acid solution （2 mL/kg） into the intestinal cavity to construct UC model. After modeling， the rats in each drug group were given corresponding drug solution by gavage or （and） tail vein injection， once a day， for 14 consecutive days. After the last administration， the weight of rats in each group was measured， and the length of their colons was measured； disease activity index （DAI） score and colonic mucosal damage index （CMDI） score were performed， and the serum levels of inflammatory factors （interleukin-18， -1β， -6） were detected. The pathological changes of the colon tissue were observed. The expressions of pyroptosis-related proteins [caspase-1， gasdermin D （GSDMD）] in colon tissue， and pathway-related proteins such as adenosine monophosphate-activated protein kinase （AMPK）， thioredoxin-interacting protein （TXNIP）， NOD-like receptor protein 3 （NLRP3） and apoptosis-associated speck-like protein containing a CARD （ASC） were all detected. RESULTS Compared with Control group， the colon tissue structure of rats in UC group was damaged， with obvious infiltration of inflammatory cells and edema. Their body weight， colon length and phosphorylation level of AMPK protein were significantly reduced or shortened； DAI and CMDI scores， serum levels of inflammatory factors， and the protein expressions of caspase-1， GSDMD， TXNIP， NLRP3 and ASC in colon tissue were increased or upregulated significantly （P＜0.05）. Compared with UC group， the pathological damage of colon tissue in rats was relieved in Asp-L and Asp-H groups， and all quantitative indicators were significantly improved （P＜0.05）； the improvement effect of Asp-H group was more significant （P＜0.05）. Compound C could significantly reverse the improvement effect of high-dose of Asp on the above indicators in UC rats （P＜0.05）. CONCLUSIONS Asp can improve inflammatory damage in colon tissue and inhibit pyroptosis of intestinal epithelial cells in UC rats， which is associated with the activation of AMPK and inhibition of TXNIP/NLRP3 signaling pathway.

Due to the diverse composition and complex physicochemical and biological characteristics, the pre-treatment of microbiological counting method （preparation of test solution） in microbiological limit test were interfered by many factors, which ultimately affected the repeatability and accuracy of test results. Improving the accuracy of microbiological test is of practical significance to ensure the safety and effectiveness of non-sterile preparations. In this paper, the key factors and optimization methods involved in the pre-treatment of proprietary Chinese medicines were systematically analyzed and summarized.

Objective:To assess the capability of seven reference medical laboratories to detect BCR::ABL1 p210 transcription levels and to compare the results among those laboratories.Methods:The interlaboratory comparison was carried out in two stages. The samples were prepared by the reference laboratory. The quantitative values of BCR::ABL1 p210 of the comparison samples covered 0.001%-0.01%, 0.01%-0.1%, 0.1%-1%, 1%-10% and>10% in each stage. Real-time quantitative PCR (RT-PCR) and dPCR (digital PCR) were used to examine the samples. The conversion factor (CF) was calculated and validated for each laboratory.Results:In the RT-PCR comparison, one laboratory was failed to detect BCR::ABL1 p210 in fourteen samples at the first stage. The results of the other six laboratories were qualified with the bias <±1.2 folds (-0.133-0.338) and 95% limits of agreement within ±5 folds (upper limit 0.147-0.785, lower limit -0.770--0.109), and the corresponding CF values were calculated and validated. In the dPCR comparison, one laboratory did not report results at the second stage. The results of the other six laboratories were qualified with the bias <±1.2 folds (-0.026-0.267) and 95% limits of agreement within±5 folds (upper limit 0.084-0.991, lower limit -0.669--0.135), and the corresponding CF values were calculated and validated. The samples with BCR::ABL1 p210 quantitative values of 0.01%-0.1%, 0.1%-1%, 1%-10% and >10% could be detected by both RT-PCR and qPCR. When the quantitative value of BCR::ABL1 p210 was 0.001%-0.01%, the detection rate of dPCR was higher than that of RT-PCR (85.56% vs. 68.00%).Conclusions:A good consistency is present among various laboratories. The quantitative value of BCR::ABL1 p210 is comparable among laboratories as shown by the CF value conversion. For quantitative detection of BCR::ABL1 p210 deep molecular reaction, dPCR has a higher positive detection rate and more advantages than RT-PCR. To ensure the accuracy and reproducibility of the BCR::ABL1 p210 test, it is imperative for every laboratory to enhance their daily quality control practices.

Objective To investigate the clinical effect of different magnetic stimulation pelvic floor modes in the treatment of perimenopausal myofascial pelvic pain syndrome(MPSS).Methods A total of 60 perimenopausal women who were clinically diagnosed with MPSS in the hospital from May 2022 to May 2023 were selected as the research objects.They were divided into groups A,B and C by random number table method,with 20 cases in each group.All patients in the three groups were treated with pelvic floor myofascial manual release.Group A was given pelvic floor magnetic stimulation(alternating 10 Hz and 50 Hz),group B was given sacral nerve root magnetic stimulation(50 Hz),and group C was given pelvic floor magnetic stimu-lation combined with sacral nerve root magnetic stimulation at the same time.The three groups were treated twice a week for eight weeks.Visual analogue scale(VAS)was used to evaluate the degree of pelvic floor myofascial tenderness before and after treatment,and Glazer pelvic floor surface electromyography was used to evaluate pelvic floor muscle function.Results Compared with before treatment,the VAS scores of subjec-tive pain and pelvic floor myofascial tenderness in the three groups were decreased after treatment,and the differences were statistically significant(P<0.05).Compared with group A and group B,the VAS score of subjective pain and the VAS score of pelvic floor myofascial tenderness in group C were significantly decreased after treatment,and the differences were statistically significant(P<0.05).Compared with before treatment,the average amplitude and coefficient of variation(CV)of pre-rest potential and post-rest potential in the three groups were decreased after treatment,and the differences were statistically significant(P<0.05).Compared with before treatment,only the maximum amplitude of rapid contraction,the average amplitude of 10 s sustained contraction and 60 s sustained contraction and CV in group C were improved,and the differ-ences were statistically significant(P<0.05).Compared with group A and group B,the average amplitude and CV of pre-resting potential and post-resting potential in group C were decreased after treatment,the maxi-mum amplitude of rapid contraction and the average amplitude and CV of 10 s continuous contraction and 60 s persistent contraction were improved,and the differences were statistically significant(P<0.05).Conclusion Dif-ferent magnetic stimulation pelvic floor modes can effectively relieve pain and improve pelvic floor muscle strength in the treatment of perimenopausal MPSS,and the effect of pelvic floor magnetic stimulation com-bined with sacral nerve root magnetic stimulation is the best.

Objective To enhance the standardization of surgical operations,shorten the learning curve,and reduce surgical complications by summarizing common errors and proposing solutions for beginners during pre-study of cavity construction in non-inflatable axillary approach laparoscopic thyroid surgery.Methods A retrospective analysis was made on 210 patients who underwent noninflatable axillary approach luminal thyroid surgery at the Department of Head and Neck Surgery,Zhejiang Provincial People's Hospital,between January 2022 and June 2023.Among them,150 patients were luminalized by the practitioners in the practice group,while 60 patients were luminalized by the practitioners in the skilled group.The occurrence of nine common errors during cavity construction,such as supraclavicular nerve injury and scapulohumeral muscle injury,was assessed and compared between the two groups.Results There was no statistically significant difference in age,gender,tumor diameter,tumor location or pathology type between the two groups(P＞0.05).The staff in the practice group had a significant difference in supraclavicular cutaneous nerve injury(19.33％vs.3.33％),scapulohumeral muscle injury or disarticulation(16.00％vs.0),anterior cervical band of free excess(24.00％vs.3.33％),pectoralis major muscle and supraclavicular fascia injury(16.00％vs.5.00％),external jugular vein and genuine branch injury(8.00％vs.0),excessive freeing of the sternoclavicular joint(7.33％vs.0),and incorrect entry of the sternocleidomastoid muscle gap(8.67％vs.0)were significantly higher in incidence than the employees in the skilled group(P＜0.05).There was no statistically significant difference between employees in the practice group and those in the skilled group in terms of injury to the internal jugular vein and its geniculate branches(4.00％vs.0),and incorrect entry of the anterior cervical strap muscles into the hierarchy(2.00％vs.0)(P＞0.05).Conclusion The incidence of damage to the surrounding tissue was significantly higher in the novice group than in the expert group during endoscopic thyroid surgery for space construction.A solid anatomical foundation and proficient endoscopic surgical technique serve as fundamental prerequisites for achieving a successful space system construction.By summarizing common challenges and providing corresponding solutions encountered during endoscopic thyroid surgery,this study further enhances and refines the learning system for total endoscopic thyroid procedures.

Objective To investigate the correlation of serum angiopoietin-1(Ang-1),angiopoietin-2(Ang-2),and Ang-1/Ang-2 ratio with HBA DNA and alanine aminotransferase(ALT)in patients with chronic hepatitis B(CHB)or liver cirrhosis.Methods Clinical data and serum specimens were collected from 99 patients with CHB and 59 patients with liver cirrhosis who were admitted to Beijing YouAn Hospital,Capital Medical University,from March 2018 to October 2019,and 46 individuals who underwent physical examination were enrolled as control group.PCR was used to measure serum HBV DNA level,and ELISA was used to measure the serum levels of Ang-1 and Ang-2.The serum levels of Ang-1 and Ang-2 and Ang-1/Ang-2 ratio were compared between groups.The Kruskal-Wallis H test was used for comparison of non-normally distributed continuous data between multiple groups,and the Bonferroni method was used for further comparison between two groups;the Spearman correlation analysis was used to investigate the correlation of Ang-1,Ang-2,and Ang-1/Ang-2 ratio with HBV DNA and ALT.Results Compared with the control group,the CHB group and the liver cirrhosis group had a significant reduction in the level of Ang-1(479.0 pg/mL and 208.4 pg/mL vs 671.0 pg/mL,both P＜0.05),and compared with the CHB group,the liver cirrhosis group had a significant reduction in the level of Ang-1(P＜0.001).Compared with the control group,the CHB group and the liver cirrhosis group had a significant increase in the level of Ang-2(286.1 pg/mL and 438.4 pg/mL vs 198.0 pg/mL,both P＜0.001),and compared with the CHB group,the liver cirrhosis group had a significant increase in the level of Ang-2(P＜0.001).Compared with the control group,the CHB group and the liver cirrhosis group had a significant reduction in Ang-1/Ang-2 ratio(1.6 and 0.5 vs 3.4,both P＜0.001),and compared with the CHB group,the liver cirrhosis group had a significant reduction in Ang-1/Ang-2 ratio(P＜0.001).The Spearman correlation analysis showed that in the CHB group,Ang-1 was negatively correlated with HBV DNA and ALT(r=-0.400 and-0.394,both P＜0.001),Ang-2 was positively correlated with HBV DNA and ALT(r=0.365 and 0.351,both P＜0.001),and Ang-1/Ang-2 ratio was negatively correlated with HBV DNA and ALT(r=-0.463 and-0.473,both P＜0.001);in the liver cirrhosis group,Ang-1,Ang-2,and Ang-1/Ang-2 ratio had no correlation with HBV DNA or ALT(all P＞0.05).Conclusion There are significant changes in the serum levels of Ang-1 and Ang-2 and Ang-1/Ang-2 ratio in patients with CHB or liver cirrhosis,and Ang-1,Ang-2,and Ang-1/Ang-2 ratio reflects the degree of liver injury in patients with CHB to a certain extent.

Children and adults differ significantly in physiology,biochemistry and immune function,which leads to sig-nificant differences in blood transfusion strategies between children and adults.To guide the clinical transfusion practice of pediatric patients and improve the prognosis of children,the National Health Commission organized the formulation and re-lease of the health industry standard Guideline for Pediatric Transfusion(WS/T 795-2022).This paper will briefly introduce some concepts that help understand of the Standard and the preparation process of the Standard,and explain and interpret the preparation of the"scope","general provisions"and"factors to consider"of the Standard,hoping to contribute to the understanding and implementation of the Standard.

Objectives:To observe the exercise tolerance and cardiopulmonary function characteristics of patients with obstructive sleep apnea-hypopnea syndrome (OSAHS) combined with cardiovascular disease,in order to assess the cardiorespiratory reserve and health status of untreated OSAHS,and to provide a clinical evidence for the phase Ⅱ cardiac rehabilitation. Methods:This retrospective analysis included 134 cardiovascular disease patients who attended the Cardiac Rehabilitation Center of Fuwai Hospital,Chinese Academy of Medical Sciences from November 2021 to April 2024 and received home sleep apnea monitoring (HSAT).According to the apnea hypopnea index (AHI),the patients were divided into the non-OSAHS (AHI<5 times/h) group (n=24),the mild-OSAHS (5 times/h ≤AHI<15 times/h) group (n=65),and moderate-to-severe OSAHS (AHI ≥15 times/h) group (n=45),and the body composition,pulmonary function characteristics,exercise tolerance,and ventilatory response to exercise were compared among the three groups. Results:A total of 110 (82.1％) patients had comorbid OSAHS,with a higher proportion of male patients (80.0％).Height,weight,body mass index,lean body mass,skeletal muscle mass,body water content,and basal metabolic rate increased progressively with increasing OSAHS severity in three groups (all P<0.05),while cardiovascular disease comorbidity was similar.Static lung function,exercise tolerance and ventilatory function at maximal exercise were similar between the patients in the mild OSAHS group and the moderate-severe OSAHS group as compared to the non-OSAHS group (all P>0.05).With the increase in the severity of OSAHS,the cardiorespiratory fitness showed a decreasing trend among patients in the three groups,and the forced vital capacity and the maximum vital capacity of patients in the moderate-severe OSAHS group were significantly higher than that of the mild OSAHS group,while peak O2 pulse％pred was significantly lower than that of the mild OSAHS group (all P<0.05).Multivariate analysis showed that the body fat mass (β=0.307,95％CI:0.263-0.823,P<0.001),minute ventilation at rest (β=0.259,95％CI:0.429-1.785,P=0.002) were the independent influencing factors of AHI. Conclusions:The prevalence of OSAHS is high in patients with cardiovascular disease,and patients with moderate-to-severe OSAHS have reduced cardiorespiratory fitness,OSAHS is not associated with additional cardiac impairment and ventilatory function impairment in patients with cardiovascular disease.Weight loss should be the primary rehabilitation goal in patients with OSAHS combined with cardiovascular disease.

Objective:To analyze the seroepidemiological characteristics of hepatitis B virus (HBV) infection among adolescents aged 0-14 years in Henan Province and to evaluate the effectiveness of the childhood hepatitis B vaccine (HepB) immunization program.Methods:From September 2021 to March 2022, a total of 4 883 adolescents aged 0-14 years were selected from 25 villages or communities of 18 provincial-level cities in Henan Province by using the multi-stage random cluster sampling method. Demographic data were collected through questionnaires. The 3 ml of blood samples were collected from individuals aged 0-4 years and 5 ml of blood samples were collected from individuals aged 5-14 years to test HBsAg, HBcAb and HBsAb. Data on vaccination were collected through Henan Provincial Immunization Information System and hepatitis B cases in Henan Province were collected through China Infectious Disease Reporting System. The effectiveness of the childhood HepB immunization program was analyzed.Results:The average age of 4 883 subjects was (7.32±2.81) years old. The positive rates of HBsAg and HBcAb were 0.1% (7/4 883) and 1.0% (50/4 883), and the population standardized rates were 0.3% and 1.7%. In 2002, the positive rate of HBsAg among adolescents aged 0-14 years in Henan Province was 3.39%. Compared with that in 2002, the number of chronic HBV infections among adolescents in Henan Province in 2022 decreased by about 0.7 million. In 2002, the vaccination rate of newborns who completed all three doses of vaccine was 6.26%. In 2003, the vaccination rate of the hepatitis B vaccine rose rapidly, reaching 90% in 2013 for the first time. After 2014, the vaccination rate in Henan Province continued to remain above 95%. The proportion of cases among children aged 1-4 years in clinical reports decreased from 0.43% (1 108/256 566) in 2006 to 0.01% (78/80 655) in 2021. The proportion of cases among adolescents aged 5-19 years decreased from 18.21% (46 710/256 566) in 2006 to 1.1% (827/80 655) in 2021.Conclusions:From 2002 to 2022, the positive rate of HBsAg among adolescents aged 0-14 years has decreased significantly in Henan Province. The effectiveness of the HepB immunization program for children is good.